Gauge pin



E. L. MEGILLJ GAUGE PIN. I APPLICATION FILED, AUG-11,1919.

1 ,40'83'56. Patented Mar. 7, 1922.

A NTOR igiw/ F ATTORNEY UNITED STATES,

PATENT OFEIQE.

nnwann L. MneiLn, or New YORK, v. Y.

GAUGE PIN.

Application filed August 1 i To all whom it may concern:

Be it lronwn that I, Enwann L. hincinn, a citizen o1" the United States, residing at New York, in the county of New York and State of New Yorlghave invented certain new and useful Improvements in Gauge Pins, olwhich the following is a-specifica tion. C

This invention relates to improvements in gauge pins which are adapted to be removably secured on a tyinpan, and one of the objects of: the invention is to provide a device of this sort in which there is a prong which penetrates through and underlies the tympan sheet,a head portion which acts as a stop for sheets Fed into the press, presser arms which overlie the typmpan sheet and cooperate with the prong, and with teeth on the lower edge of the head to hold the device in position on the tympan, and a spring "tongue extending forwardly of the head to prevent the vertical displacement of sheets which have been fed up to the head, all'oi these parts being integrally formed from a single piece of metal. 4

Another object of the invention is to pro vide presser arms extending baclrwardly from the head, of such shape and so disposed that when the pin is inserted in the tympan sheet wrinkling and tearing of the sheet will be prevented.

A further object is to so relate the "forwardly extending spring tongue to the head of the pin in such manner that whereas the head may be quite low in itsvertical aspect,

and the springtongguehigh above the tymi pan at its outer end, the inner end or root of the spring tongue Wlll be desirably low and close to the tympan.

Other objects and aims ofthe invention, more or less broad than those stated above,

together with the advantages inherent, will be in part obviously and in part specifically referred to in the course of the following de scription oi the elements, combinations, ar raugements of parts, and applications of principles constituting the invention; and

the scope of protection contemplated will appear from the claims' In the accompanying drawings, which are to be taken as part of this specification, and in which I have shown merely a preferred form of embodiment of the invention, Figure 1 is a plan view showing a device made in accordance with my invention as applied to a tympan; Figure 2 is an edge view of Specification of Letters Patent. fatg ted T513 1? 1922 i 1, 1912. Serial No. 316,925.

the same; Figure aperspective view of the gauge pin loolringfrom therear; Figure {l is a ,viewsimilar toFipgure 8' but looking at the front oi the devioeyFigure :iisa-view oi the blank from which the pin isi'iorinerh up. V i Reiierring to the numerals on the drawing and particularly to Figure 5', there is shown a blank comprising a body portion 6 having rearwardly extending divergent presser-ariii i portions 7, with rounded ends 8 Between" these arms and also extendinq" rearwardly from the body portion 6 is holding pron g portion 9. From about midway of the other edge oi the body portion 6 extends a spring tongue portion 10, and itwill be observed that the material of this edge portion is cut out as indicated at 11 on either side of the spring tongueportion to facilitate the bending of'the :fronthead portions 12 on either side of the tongue; 10 as hereinafter described' The extreme ends of this edge portion are formed with tooth like members 14, which are pressed down into i the tympan sheet when the device has been brought to proper position thereon. Thebody portion 6 is formed upas' shown in Figuresl to 4 inclusive, by bending it along lines indi tion of the head between the lines and 16 a as the top or GOIlIlBCtiDg member of an inn verted U, with the arms 7 and the holding prong 9' extending in a common horizontal plane. The teeth 14 on the forwardg and now-vertical, portion of the U-shaped head are of such length that they will'extend be low the plane of the arms 7 whereas the prongtongue portionq10,by reason of the cut-outs 11 in the forward edge of the body 6 will have its root extending from the forward vertical head portion above the plane 01 the arms 7, the relative height of the root of the tongue depending of course upon the depth of the cuts 11. The tongue portion 10 is given a bend substantially as shown in Figure 2, that is to say the portion nearest the root bends downwardly and then the tongue bends upwardly again so that its outer end is comparatively high. Thus I obtain a spring tongue with a high outer end and a low inner end and extending from a gaugepin with a desirably low head.

' Theidevice thus described lends itself readily to the-ordinary shop practice which is followed in the manufacture of articles oi this sort and has the advantage of providing an integral construction in which are found all the necessary elements, ashcad member,

' holding prong, presser arm and spring of the gauge pin and in line with the prong,

tonguethe device as. a whole will yield with-1 tongue, sorelated that the prongmay be readily pushed into thetynipan, and the.

head tapers-tobring its teeth into holding engagement with the tyn pan sheet when 7' the desired posltion 1S reached; while the divergent presser arms with their roundedends pass smoothly over theiace of the tympan and spread out the wrinkles therein.

and avoid tearing of the paper as the pin pushed to position. Obviously tearing through'would occur if the arms were spaced parallel with the prong and dld nothave the rounded orcurved ends.

The tongue is made integral with the head and tapers from the root towards the tip and curves upwardly to the outer end, so that when 1n use on the press and coming 1n contact with high furniture, slugs, quads or patent. bases in the form, the tongue will yield elastically in'co-action with the yield ing of the prong, and thereafter return to its normal height in relation to the tympani .to which it is attached. Byreasonof this inherent elasticity of the device, when any pressure comes on the end of the spring out breaking, pivoting slightly on the teeth 14:. The curving of the spring tongue is to give it greater height than is afforded by the gauge pin proper. The object of this is that the sheets maybe fed low against the tyinpan, and yet be'sufficiently high at the end of the tongue for the sheets to catch under when being fedto the low gauge head. The gauge head itself being an unyielding structure is desirably lowrsothat itdoes not come incontact Iwiththe hard substances in the chase around the type, consisting or theabovementioned quads etc. Of course compression is not calculated upon beyond that allowed by the gaugevheadpwhich is formed to a very Slight height, say'one-sixteenths of an inch, as that has been determined as the necessary height for the safe feeding of the sheets.

Since, however, sheets would be likely to pass over such a low gauge in being l ed onto the platen, the extra height necessary is obtained by the upturned end of the tongue extending "from the gauge head as described.

The down bend of the tongue adjacent its root keeps the sheets from feeding above the 'flat surface of the head onto the'rounded corners thereof. This drop is an advantage in the manufacturing of the article because tion presenting a flat face with a top and a bottom edge, cooperating clamping members extending ina common plane substantially at right angles and rearwardly from the bottom edge, and an integral tongue extending forwardly from the top of the head portion, the head portion being included between tympan sheet and the root and spacing apart the plane of the clamping 7 members and any parallel plane in which lies anypart of the tongue.

2. A device as set forth-in claim 4:, in which the inner end portion-of the tongue is bent towards the plane of the clamping members, and the'outer end portion of the tongue is bent away from that plane;

3. A gauge pin comprising a head of in verted U-shape, the forward vertical wall of thehead presenting a flat face and being provided with teeth on its lower edge at the end and cutout adj acent each tooth, a tongue extending forwardly and upwardly from the upper edge portion of said wall'and having its root defined between the cut-outs therein, divergent presser arms with rounded ends extending rearwardly from the lower edge of the rear vertical wall, and an in tegral' holding prong extending, rearwardly from the lower edge'of said wall between the armsand in the plane of the arms.

In testlmony whereof I aiiix my signature.

, EDWARD L. MEorLL. 

